<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="index.css">
</head>
<body>
<div class="nav">
    <div >
        <div class="header"><b>grade manage system</b></div>
    </div>
    <div class="login">
        <a href="login.html" id="login">login</a>
    </div>
    <div>
        <a href="info.html" id="info">info</a>
    </div>
    <div >
        <a href="#" id="workspace">Android<img src="image/QRcode.png" height = 80px  class="image"></a>
    </div>
</div>
<div class="box">
    <a href="grade.html" class="a" target="_bank">
        <div class="card">
            <img src="image/grade.png" class="img" alt="图片无法加载" height="100px" >
            <div class="cardinfo"><b>grade</b></div>
        </div>
    </a>
    <a href="student.html" class="a" target="_bank">
        <div class="card">
            <img src="image/stuinfo.png" class="img" alt="图片无法加载" height="100px" >
            <div class="cardinfo"><b>student</b></div>
        </div>
    </a>
    <a href="teacher.html" class="a" target="_bank">
        <div class="card">
            <img src="image/teacher.png" class="img" alt="图片无法加载" height="100px" >
            <div class="cardinfo"><b>teacher</b></div>
        </div>
    </a>
    <a href="setting.html" class="a" target="_bank">
        <div class="card">
            <img src="image/setting.png" class="img" alt="图片无法加载" height="100px" >
            <div class="cardinfo"><b>setting</b></div>
        </div>
    </a>
</div>

</body>
</html>